Marie of Baden (Marie Elisabeth Wilhelmine; 7 September 1782 – 20 April 1808) was a Duchess consort of Brunswick-Wolfenbüttel and Brunswick-Oels.
She was married to Frederick William, Duke of Brunswick-Wolfenbüttel, and was the daughter of Charles Louis, Hereditary Prince of Baden, and Landgravine Amalie of Hesse-Darmstadt.